The annual event, often called “Russian Davos,” drew thousands of participants from over 130 countries for business deals, global economic talks, and high-level dialogue, with Putin delivering a key address. Residents posted images and video on Telegram showing smoke near the Kronstadt Marine Plant, a naval shipyard about 30 km west of central St. Petersburg. Local transport officials briefly halted entry and exit from Kronstadt after the incident. Russia’s Defence Ministry said air defences shot down 376 drones overnight, including more than 140 over the Leningrad region around St. Petersburg. Ukraine has intensified its long-range drone campaign against Russian oil infrastructure in recent weeks. Strikes hit multiple refineries and export terminals. Kyiv aims to curb Russia's war funding, with nearly 40% of refining capacity reportedly offline as of May. Oil sites hit, evacuations reported Leningrad Governor Alexander Drozdenko said a fire broke out at a facility belonging to Russia’s Defence Ministry, and that residents were being evacuated in the Lomonosovsky district. In southern Russia’s Krasnodar region, local authorities said an oil depot in Ust-Labinsk was hit by drones and 60 people were evacuated from nearby homes. No casualties were reported. Smoke was also reported over port infrastructure in Russian-occupied Mariupol, in southeastern Ukraine. Separately, authorities in Russia’s Tyumen region said a fire at the Antipinsky oil refinery, one of Russia’s largest oil-processing plants, was caused by “process violations” at a purification unit, rejecting claims it was due to a drone attack. Ukraine has not commented on the reported raids.
